> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lumina-org.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Try-It sandbox

> Test the Lumina API without an account or wallet. Sandbox runs on Base Sepolia testnet — production runs on Base mainnet (8453).

<Warning>
  **SANDBOX environment — testnet only.** The `/sandbox/*` endpoints execute
  against **Base Sepolia (chainId 84532)** with a mock USDC. **Production
  Lumina runs on Base mainnet (chainId 8453) since 2026-05-28.** For real
  policy purchases on mainnet, see [contracts/deployed](/contracts/deployed).
</Warning>

The sandbox lets you call `POST /sandbox/try` with no API key and watch a real
on-chain policy purchase execute against a shared, server-funded wallet. It's
the fastest way to see Lumina end-to-end before you generate keys.

## Status

```bash theme={null}
curl https://lumina-api-production-ac85.up.railway.app/sandbox/info
```

Response:

```json theme={null}
{
  "ok": true,
  "enabled": true,
  "sandboxWallet": "0x…",
  "coverageCapUsdc": "100000000",
  "asset": { "symbol": "BTC", "bytes32": "0x4254430000…" },
  "defaultProductId": "0xe87625…",
  "defaultProductName": "FLASHBTC1H-001",
  "rateLimit": { "perIp": 10, "windowSeconds": 3600 },
  "docs": "https://docs.lumina-org.com/agents/products-and-assets"
}
```

The `asset` field is **resolved per-shield** from `defaultProductName`. For
the six V5.3 flash shields it's either `BTC` (FlashBTC × 3) or `ETH`
(FlashETH × 3) — see [Products and assets](/agents/products-and-assets) for
the full registry. The V5.1 stablecoin products (`MICRODEPEG-001` USDT,
`RATESHOCK-001` USDC) were retired or paused in Sprint T-30c and no longer
appear as `defaultProductName` candidates.

When `enabled: false`, the sandbox is disabled in the current deployment
(usually because `SANDBOX_WALLET` is not set on the API server).

## Try it

```bash theme={null}
curl -X POST https://lumina-api-production-ac85.up.railway.app/sandbox/try \
  -H "Content-Type: application/json" \
  -d '{}'
```

Response (truncated):

```json theme={null}
{
  "ok": true,
  "sandbox": true,
  "policyId": "42",
  "buyer": "0x…",
  "coverageAmount": "100000000",
  "premiumPaid": "1234",
  "txHash": "0x…",
  "blockExplorer": "https://sepolia.basescan.org/tx/0x…"
}
```

## Limitations

* **Cap**: every purchase is exactly `coverageCapUsdc` (default \$100, the
  on-chain minimum enforced by `CoverRouterV2`).
* **Throughput**: 10 calls per IP per hour.
* **Wallet**: the sandbox wallet is shared — bonds minted by sandbox triggers
  are NOT yours. They live in the shared wallet for demo purposes.
* **Network**: Base Sepolia testnet (chainId 84532) only.

## Next step

Once you've watched a sandbox purchase succeed, generate your own API key
([self-service](https://www.lumina-org.com/app/agent/api-keys)) and call
[`POST /api/v1/policies`](/api-reference/endpoint/purchase-policy) directly.